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arXiv 2003.14190cond-mat.soft
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玻璃形成体中循环剪切与深冷的热力学等价性

Thermodynamic Equivalence of Cyclic Shear and Deep Cooling in Glass-Formers

Bhanu Prasad Bhowmik, Valery Iylin, Itamar Procaccia

摘要:

在实验和模拟中,与玻璃形成相关的极端减慢导致制备深度淬火、良好退火的玻璃状材料的严重困难。最近,人们提出了实现这种深度淬火的方法,包括实验侧的气相沉积和模拟侧的“交换蒙特卡罗”和振荡剪切。在不同的协议下得到的玻璃之间的关系仍然不清楚。在这里,我们表明,振荡剪切和“交换蒙特卡罗”的结果在等效玻璃共享相同的统计力学和类似的机械响应下的外部应变。

英文摘要:

The extreme slowing down associated with glass formation in experiments and in simulations results in serious difficulties to prepare deeply quenched, well annealed, glassy material. Recently, methods to achieve such deep quenching were proposed, including vapor deposition on the experimental side and "Swap Monte Carlo" and oscillatory shearing on the simulation side. The relation between the resulting glasses under different protocols remains unclear. Here we show that oscillatory shear and "Swap Monte Carlo" result in thermodynamically equivalent glasses sharing the same statistical mechanics and similar mechanical responses under external strain.

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